Negative CR

<?php ?> can be used as a negative CR. It cancels off a CR when it is placed at the ene of a sentence.

For example, the following two lines will be printed as one line in the source code.

This Will Be <?php ?>
One Line!

To make it effective, make sure there is at least one space after 'php' in <?php ?>.
It is true even when you put a comment like this

<?php /* */?>

Note that <?php/* */?> will not work!